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Raspberry Pi Pico
Stage 4: Line-Following Robot
Teach a robot to follow a line on the floor using two IR sensors and a Raspberry Pi Pico.
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₹4,499
₹5,199
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12+Age group
1Projects
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About this kit
Build a line-following robot using two IR sensors and a Raspberry Pi Pico. Learn to read digital sensor input and translate it into real-time motor control decisions -- the same sensing-and-reacting loop used in real autonomous robots.
What you'll build
4 hands-on builds included with this kit
1
IR sensor test
Wire both IR sensors to the Pico's digital inputs and read their on/off state as they pass over light and dark surfaces.
2
Motor driver wiring
Wire all 4 BO motors to the L298N driver so the Pico can drive each side independently.
3
Line-following logic
Write the control loop that steers the robot based on which sensor currently sees the line.
4
Calibrated line follower
Tune the sensor thresholds and motor speed until the robot reliably tracks a line at a steady pace.
What's in the box
11 line items — check everything before you start building
|
Raspberry Pi Pico
The microcontroller -- runs the MicroPython program that reads the sensors and drives the motors. |
1 |
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L298N motor driver
Lets the Pico safely switch the higher-current drive motors. |
1 |
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IR sensor
Detects the contrast between a dark line and a light floor by reflecting infrared light. |
2 |
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300 RPM BO motor-straight
Geared DC motors that drive the wheels. |
4 |
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65mm robot wheel
Larger wheels for smoother, more stable tracking. |
4 |
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Robot chassis
The frame every component mounts to. |
1 |
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Jumper wires
Wire the sensors and driver board together. |
40 |
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18650 Li-ion 2500mAh battery pack
Power source for the motors and electronics. |
1 |
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Breadboard
Prototyping surface for the sensor wiring. |
1 |
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Data cable (type B)
Connects the Pico to a computer to upload the MicroPython code. |
1 |
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Double-sided foam tape
Secures the breadboard and sensors to the chassis. |
1 |
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